EP1200725B1 - Piston for an internal combustion engine - Google Patents
Piston for an internal combustion engine Download PDFInfo
- Publication number
- EP1200725B1 EP1200725B1 EP00951450A EP00951450A EP1200725B1 EP 1200725 B1 EP1200725 B1 EP 1200725B1 EP 00951450 A EP00951450 A EP 00951450A EP 00951450 A EP00951450 A EP 00951450A EP 1200725 B1 EP1200725 B1 EP 1200725B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- cooling channel
- piston
- hand
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
Definitions
- the invention relates to a piston for an internal combustion engine with an annular arranged cooling duct, which consists of a left and a right cooling duct half exists and which has a first and a second opening, cooling oil through a Cooling oil nozzle can be fed as a free oil jet into the first opening and thus into the cooling channel and can be removed through the second opening.
- the cooling oil is by means of a cooling oil jet nozzle injected into a first opening, the inflow opening, then distributed in the Cooling channel and is discharged through a second opening, the drain opening.
- the cooling oil nozzle at a certain angle with respect to the piston skirt can be employed, the cooling oil is not divided into equal parts in each Injection molded left and right cooling channel half with respect to the inlet opening. This works adversely affect the cooling effect of the cooling oil flow.
- the present invention is based on the object To improve pistons of the type described above in that a uniform cooling effect in the entire cooling channel is achieved.
- the coolant flow when hitting the Bottom surface of the cooling channel is divided and divided equally into the left and right cooling duct half is introduced.
- the rib element can be offset in relation be placed on the center of the inlet opening.
- first and the second opening have the same dimensions and are arranged symmetrically in the cooling channel are such that both the first and the second opening as inlet or drain opening can be used, the rib element in plan view the cooling channel level once on the left and once on the right with respect to the pin bore center line arranged of the piston.
- the piston can be used universally and does not need to be aligned with an opening.
- the invention is based on an embodiment shown in the drawing explained in more detail.
- a piston 1 has a ring-shaped arrangement in its piston head region Cooling channel 2, which consists of two cooling channel halves 3 and 4, on.
- This cooling channel has two openings 5, 6, which serve either as inlet or outlet openings can.
- coolant is passed through a coolant nozzle 7 (see FIG. 2) Injected cooling channel 8 and passes into the cooling channel 2 through the associated opening 5 and can flow through the opening 6 and the associated channel 9.
- the coolant nozzle 7 is at a certain angle with respect to a piston skirt 10 is employed, is in the bottom surface of the cooling channel 2 in the area of Inlet opening 5 integrally formed in the radial direction rib element 11, the position of the rib element 11 with respect to the center of the inlet opening 5 depends on the orientation of the coolant nozzle 7 such that the coolant flow is introduced into the left and right cooling duct halves 3, 4 in equal parts.
- the first and second openings 5, 6 have the same dimensions and are symmetrical in Cooling channel 2 arranged such that both the first and the second opening 5, 6 can be used as an inlet or outlet opening, the rib element 11 in the Top view of the cooling channel level once on the left and once on the right in relation to the Pin bore centerline of the piston.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
Die Erfindung betrifft einen Kolben für einen Verbrennungsmotor mit einem ringförmig angeordneten Kühlkanal, der aus einer linken und einer rechten Kühlkanalhälfte besteht und der eine erste und eine zweite Öffnung aufweist, wobei Kühlöl durch eine Kühlöldüse als freier Ölstrahl in die erste Öffnung und damit in den Kühlkanal zuführbar ist und durch die zweite Öffnung abführbar ist.The invention relates to a piston for an internal combustion engine with an annular arranged cooling duct, which consists of a left and a right cooling duct half exists and which has a first and a second opening, cooling oil through a Cooling oil nozzle can be fed as a free oil jet into the first opening and thus into the cooling channel and can be removed through the second opening.
Derartige Kolben sind hinlänglich bekannt. Das Kühlöl wird mittels einer Kühlölstrahldüse in eine erste Öffnung, die Zuflußöffnung, gespritzt, verteilt sich dann in dem Kühlkanal und wird durch eine zweite Öffnung, die Abflußöffnung, abgeführt. Dadurch, daß die Kühlöldüse in einem bestimmten Winkel in Bezug auf den Kolbenschaft angestellt sein kann, wird das Kühlöl nicht zu gleichen Teilen in die jeweils in Bezug auf die Zulauföffnung linke und rechte Kühlkanalhälfte gespritzt. Dies wirkt sich nachteilig auf die Kühlwirkung des Kühlölstroms aus.Such pistons are well known. The cooling oil is by means of a cooling oil jet nozzle injected into a first opening, the inflow opening, then distributed in the Cooling channel and is discharged through a second opening, the drain opening. Thereby, that the cooling oil nozzle at a certain angle with respect to the piston skirt can be employed, the cooling oil is not divided into equal parts in each Injection molded left and right cooling channel half with respect to the inlet opening. This works adversely affect the cooling effect of the cooling oil flow.
Ein derartiger Kolben ist aus der US-A-3 189 010 bekannt.Such a piston is known from US-A-3 189 010.
Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen Kolben der vorstehend beschriebenen Art dahingehend zu verbessern, daß eine gleichmäßige Kühlwirkung im gesamten Kühlkanal erreicht wird.Proceeding from this, the present invention is based on the object To improve pistons of the type described above in that a uniform cooling effect in the entire cooling channel is achieved.
Diese Aufgabe wird durch einen Kolben der genannten Art erfindungsgemäß dadurch gelöst, daß in der Bodenfläche des Kühlkanals im Bereich der Zulauföffnung ein in radiale Richtung verlaufendes Rippenelement angeformt ist, wobei die Lage des Rippenelementes in Bezug auf den Mittelpunkt der Zulauföffnung abhängt von der Ausrichtung der Kühlöldüse derart, daß der Kühlmittelstrom zu gleichen Teilen in die linke und rechte Kühlkanalhälfte eingeleitet wird.This object is achieved by a piston of the type mentioned according to the invention solved that in the bottom surface of the cooling channel in the region of the inlet opening a rib element extending in the radial direction is formed, the position of the rib element with respect to the center of the inlet opening depends on the alignment of the cooling oil nozzle such that the coolant flow in equal parts in the left and right half of the cooling channel is introduced.
Auf diese Weise wird also erreicht, daß der Kühlmittelstrom beim Auftreffen auf die Bodenfläche des Kühlkanals geteilt wird und zu gleichen Teilen in die linke und rechte Kühlkanalhälfte eingeleitet wird. Je nach dem inwieweit die Kühlölstrahldüse in Bezug auf den Kolbenschaft angestellt wird, kann das Rippenelement versetzt in Bezug auf den Mittelpunkt der Zulauföffnung angeordnet werden.In this way it is achieved that the coolant flow when hitting the Bottom surface of the cooling channel is divided and divided equally into the left and right cooling duct half is introduced. Depending on the extent to which the cooling oil jet nozzle in Regarding the piston skirt, the rib element can be offset in relation be placed on the center of the inlet opening.
Eine besonders vorteilhafte Ausführungsform ergibt sich, wenn die erste und die zweite Öffnung gleiche Abmessungen aufweisen und symmetrisch im Kühlkanal angeordnet sind, derart, daß sowohl die erste als auch die zweite Öffnung als Zulauf- bzw. Abflußöffnung einsetzbar sind, wobei das Rippenelement in der Draufsicht auf die Kühlkanalebene einmal links und einmal rechts in Bezug auf die Bolzenbohrungmittellinie des Kolbens angeordnet. Auf diese Weise ist der Kolben universell einsetzbar und braucht nicht hinsichtlich einer Öffnung ausgerichtet zu werden.A particularly advantageous embodiment results when the first and the second opening have the same dimensions and are arranged symmetrically in the cooling channel are such that both the first and the second opening as inlet or drain opening can be used, the rib element in plan view the cooling channel level once on the left and once on the right with respect to the pin bore center line arranged of the piston. In this way, the piston can be used universally and does not need to be aligned with an opening.
Die Erfindung wird anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The invention is based on an embodiment shown in the drawing explained in more detail.
Es zeigt:
eine perspektivische Ansicht des erfindungsgemäßen Kolbens im Schnitt und
eine Unteransicht des Kolbens.
a perspective view of the piston according to the invention in section and
a bottom view of the piston.
Ein Kolben 1 weist in seinem Kolbenkopfbereich einen ringförmig angeordneten
Kühlkanal 2, der aus zwei Kühlkanalhälften 3 und 4 besteht, auf. Dieser Kühlkanal
besitzt zwei Öffnungen 5, 6, die wahlweise als Zulauf- oder Abflußöffnungen dienen
können. Hierzu wird durch eine Kühlmitteldüse 7 (siehe Figur 2) Kühlmittel in den
Kühlkanal 8 gespritzt und gelangt über die zugehörige Öffnung 5 in den Kühlkanal 2
und kann über die Öffnung 6 und den zugehörigen Kanal 9 abfließen.A
Da die Kühlmitteldüse 7 jedoch in einem bestimmte Winkel in Bezug auf einen Kolbenschaft
10 angestellt ist, ist in der Bodenfläche des Kühlkanals 2 im Bereich der
Zulauföffnung 5 ein in radiale Richtung verlaufendes Rippenelement 11 angeformt,
wobei die Lage des Rippenelementes 11 in Bezug auf den Mittelpunkt der Zulauföffnung
5 abhängt von der Ausrichtung der Kühlmitteldüse 7 derart, daß der Kühlmittelstrom
zu gleichen Teilen in die linke und rechte Kühlkanalhälfte 3, 4 eingeleitet wird.However, since the
Um den erfindungsgemäßen Kolben 1 universell einsetzen zu können, weisen die
erste und die zweite Öffnung 5, 6 gleiche Abmessungen auf und sind symmetrisch im
Kühlkanal 2 angeordnet, derart, daß sowohl die erste als auch die zweite Öffnung 5,
6 als Zulauf- bzw. Abflußöffnung einsetzbar sind, wobei das Rippenelement 11 in der
Draufsicht auf die Kühlkanalebene einmal links und einmal rechts in Bezug auf die
Bolzenbohrungmittellinie des Kolbens angeordnet.In order to be able to use the
Claims (2)
- Piston for an internal combustion engine with an annularly arranged cooling channel (2) that consists of a left-hand cooling channel half and a right-hand cooling channel half (3, 4) and that has a first opening and a second opening (5, 6), wherein cooling oil can be fed through a coolant nozzle (7) as a free oil jet into the first opening (5) and thereby into the cooling channel (2) and can be discharged through the second opening (6), characterised in that a rib element (11) running in the radial direction is arranged in the floor surface of the cooling channel (2) in the region of the feed opening (5), the position of the rib element (11) in relation to the mid point of the feed opening (5) depending on the alignment of the coolant nozzle (7) in such a way that the coolant stream is introduced in equal parts into the left-hand and right-hand cooling channel halves (3, 4).
- Piston according to claim 1, characterised in that the first and second openings (5, 6) have the same dimensions and are arranged symmetrically in the cooling channel (2) in such a way that both the first and the second opening (5, 6) may be used as feed opening or discharge opening, the rib element (11) in plan view being arranged on the one hand on the left and on the other hand on the right of the cooling channel plane in relation to the pin bore mid-line of the piston.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19935399A DE19935399A1 (en) | 1999-07-30 | 1999-07-30 | Pistons for an internal combustion engine |
DE19935399 | 1999-07-30 | ||
PCT/EP2000/007171 WO2001009503A1 (en) | 1999-07-30 | 2000-07-26 | Piston for an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1200725A1 EP1200725A1 (en) | 2002-05-02 |
EP1200725B1 true EP1200725B1 (en) | 2003-03-26 |
Family
ID=7916326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00951450A Revoked EP1200725B1 (en) | 1999-07-30 | 2000-07-26 | Piston for an internal combustion engine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1200725B1 (en) |
DE (2) | DE19935399A1 (en) |
PL (1) | PL350764A1 (en) |
WO (1) | WO2001009503A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10244513A1 (en) * | 2002-09-25 | 2004-04-08 | Mahle Gmbh | Multi-part cooled piston for an internal combustion engine and method for its production |
DE102004043720A1 (en) * | 2004-09-09 | 2006-03-30 | Federal-Mogul Nürnberg GmbH | Piston for an internal combustion engine and internal combustion engine |
DE102006056011A1 (en) * | 2006-11-28 | 2008-05-29 | Ks Kolbenschmidt Gmbh | Liquid-cooled piston for e.g. diesel internal-combustion engine, has medium in free jet of nozzles entering into openings, where jet is directed parallel to longitudinal axis of piston, and lower side loaded with medium by jet |
DE102010055029A1 (en) * | 2009-12-18 | 2012-05-10 | Ks Kolbenschmidt Gmbh | Cooling passage piston for internal combustion engine, has cooling passage comprising incidence surface that is vertically aligned to beam through inlet opening in cooling passage during movement of piston |
US8898518B2 (en) | 2010-05-18 | 2014-11-25 | Vmware, Inc. | Method and system for enabling checkpointing fault tolerance across remote virtual machines |
US8171338B2 (en) | 2010-05-18 | 2012-05-01 | Vmware, Inc. | Method and system for enabling checkpointing fault tolerance across remote virtual machines |
DE102013013962A1 (en) | 2013-08-23 | 2015-02-26 | Mahle International Gmbh | Assembly of a piston and a Anspritzdüse for an internal combustion engine |
CN111535936A (en) * | 2020-06-29 | 2020-08-14 | 安徽江淮汽车集团股份有限公司 | Engine piston |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3189010A (en) * | 1963-11-21 | 1965-06-15 | Continental Aviat & Eng Corp | Piston for internal combustion engine |
GB1096826A (en) * | 1964-06-29 | 1967-12-29 | Specialloid Ltd | Piston, e.g. for an internal combustion engine or compressor |
DE19810937C1 (en) * | 1998-03-13 | 1999-11-25 | Daimler Chrysler Ag | Pistons for an internal combustion engine |
-
1999
- 1999-07-30 DE DE19935399A patent/DE19935399A1/en not_active Ceased
-
2000
- 2000-07-26 PL PL00350764A patent/PL350764A1/en not_active Application Discontinuation
- 2000-07-26 DE DE50001569T patent/DE50001569D1/en not_active Revoked
- 2000-07-26 EP EP00951450A patent/EP1200725B1/en not_active Revoked
- 2000-07-26 WO PCT/EP2000/007171 patent/WO2001009503A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP1200725A1 (en) | 2002-05-02 |
WO2001009503A1 (en) | 2001-02-08 |
DE19935399A1 (en) | 2001-02-01 |
PL350764A1 (en) | 2003-01-27 |
DE50001569D1 (en) | 2003-04-30 |
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